What is the meaning of l.h.s and r.h.s?

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Solution

When we have equation, we can divide it into two parts, namely left hand side and right hand side. In short form we call LHS and RHS of the equation.
Suppose if we get both LHS and RHS as equal values then we say that the equation is true other wise, equation is not holds for at least some values of real numbers.
Example 1: $(x + y)^{2} = x^{2} + 2 x y + y^{2}$
Where LHS= $(x + y)^{2}$ and RHS= $x^{2} + 2 x y + y^{2}$
Example2 : $(x + y) (x - y) = x^{2} - y^{2}$
Where LHS= $(x + y) (x - y)$ and RHS= $x^{2} - y^{2}$

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